Car-bolster.



J. F. OGONNOR,

OAR BOLSTER.

APPLICATION FILED MAY,26,1910.

Patented Nov. 22, 1910 2 SHEETS-SHEET 1.

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J. P. OGONNOR.

GAB. BOLSTER.

APPLIOATION FILED MAY 26,1910.

Patented Nov. 22, 1910.

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nrron JOHN F. OCONNOR, OF CHICAGO, ILLINOIS, ASSIGNOR 'IO CLIFFORD W.SHERMAN, 0F BUFFALO, NEW YORK.

CAR-BOLSTER.

Specification of Letters E'atent.

Application filed May 26, 1910.

Patented Nov. 22, 1910. Serial No. 563,547.

To all whom it may concern:

Be it known that I, JOHN F. OCoNNoR, a citizen of the United States,residing in Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Oar-Bolsters, of which thefollowing is a specification.

My invention relates to improvements in the construction of bolsters forcars.

The object of my invention is to provide a cast steel car bolster of asimple and eilicient construction which will have a maximum strength forthe amount or weight of metal therein and which will at the same time beof such form as to enable it to be readily and cheaply cast in wet sandor without cores.

My invention consists in the novel constructions and features hereinshown and described and more particularly specified in the claims.

In the accompanying drawing forming a part of this specification, Figure1 is a side elevation partly in central, vertical, longitudinal sectionof a car truck and body bolsters embodying my invention; Fig. 2 is adetail plan view of the body bolster; Fig. 3 is a detail plan view ofthe truck bolster; Figs. 4 and 5 are detail cross sections on lines 4-4and 5-5 of Fig. 1; Fig. 6 is a side elevation partly in central verticallongitudinal section illustrating a m0dification; Fig. 7 is a plan viewof the truck bolster shown in Fig. 6 and Figs. 8, 9 and 10 are crosssections on lines 88, 99 and 10-10 respectively of Fig. 7.

In the drawing 1 represents the body bolster and 2 the truck bolster.Each of the bolsters l and 2 are made of cast steel and are of a generaltruss shape, that is to say, deeper at the middle than at the ends. Eachcomprises a central, longitudinal bottom web upwardly inclined fro-m themiddle toward each end, a pair of central, longitudinal, upright webs, apair of horizontal side webs extending longitudinally from end to end ofthe bolster and a pair of depending upright side webs or flanges, allthe webs being integrally connected together and preferably of uniform,or substantially uniform thickness. The central longitudinal web inconnection with the central upright and longitudinally extending websform a central longitudinal open channel between them and the upperhorizontal side webs in connection with the intermediate and sideupright webs form a pair of open channels at each side of the bolster.By this form and disposition of the metal the greatest possible strengthis secured for the amount or weight of metal employed and at the sametime the bolster is adapted to be cast in wet sand or without cores thusenabling it to be economically manufactured, and, as all the websupright and horizontal of the bolster are of uniform thickness, littledifficulty is experienced in the casting operation from unequal coolingor contraction or from casting strains.

The body bolster 1 has a central longitudinal bottom web 3 inclinedupwardly from the middle portion 4 of the bolster toward each end and apair of central or intermediate upright webs 5 each extending from endto end of the bolster and of tapering width or dept-h being wider at themiddle portion than at the ends. The body bolster also has a pair ofnarrow horizontal webs 6 extending from end to end of the bolster andalso a pair of depending upright side webs 7 which extend from end toend of the bolster and taper from the middle portion thereof toward eachend. The body bolster by its integral webs 3, 5, 6, and 7 has a centrallongitudinal channel 8 and two longitudinal side channels 9, 9 extendingfrom end to end of the bolster, the channels 8, 9 being deeper at themiddle than at the end p01- tions of the bolster and all these channelsbeing open, one upwardly and the other two downwardly, so that no coresare required in casting the bolster. The central longitudinal bottom web3 of the bolster is provided with transverse bends therein to form theside bearing members or projections 11., At its middle the body bolster1 is also provided with a center plate seat or bearing 12.

The truck bolster 2 is of the same general shape and construction as thebody bolster and comprises a central longitudinal bottom web 13 upwardlyinclined from the middle toward each end, a pair of upright Webs 14extending from end to end of the bolster and tapering from the middletoward each end, a pair of horizontal side webs 15 and a pair ofdepending upright side webs 16. The bottom web 13 and upright webs 14,14 form a central longitudinal open channel 17 and the webs 14, 15, 16form on each side an open side channel 18. The horizonbolster in respectto the sills.

tal side webs 1 5 of the truck bolster are also .provided with holes 19for bolts 20 of the bottom or tensile acting web 3 extends transverselyin a horizontal line and as the upper v or compression side webs 6, 6also extend horizontally the metal in these webs is all disposed as faras possible from the center or neutral axis of the truss or bolster thusgiving it a maximum of strength for the amount or weight of metal, andas in my invention the upright webs are all substantially parallel thedisposition of metal in them is alsodisposed in the most efiectivemanner for strength, while at the same time 'the bolster is of such formin cross section at all points of its length that the channels formed bythe upright and horizontal webs are all open either upwardly ordownwardly on the body bolster which not only materially adds to theefiective strength of the sills but also materially diminishes thestrains on the bolts by which the bolster is connected to the sills andwhich resist the heavy shocks that tend to twist or turn the V Thewidely separated horizontal side webs 6, 6 are furnished with holes 26to receive the bolts for connecting the bolster to the car sills.

I claim 1. A bolster consisting of an integral casting comprising a pairof straight horizontal side webs extending from end to end of thebolster, a central bottom web horizontal in cross section and extendingfrom end to end of the bolster and upwardly inclined from the middletoward each end, apair ofcentral or intermediate upright webs connectingsaid horizontal slde webs w1th said transversely-horizontal bottom weband tapering in depth from the middle toward each end bolster, a centralbottom web horizontal in cross section and extending from end to end ofthe bolster and upwardly incllned from the middle toward each end, apair of cen tral or intermediate upright webs connecting said horizontalside webs with said transversely horizontal bottom web and tapering indepth from the middle toward each end of the bolster, and a pair ofdepending upright side webs tapering in depth from the middle towardeach end of the bolster, said upright webs forming a plurality of opendrawable channels between them extending from end to end of the bolster,said bottom web having a transverse bend therein to form an integralside bearing member, substantially as specified.

3. A bolster consisting of an integral casting comprising a pair ofstraight horizontal side webs extending from end to end of the bolster,a central bottom web horizontal in cross section and extending fromend-toend of the bolster and upwardly inclined from the middle towardeach end, a pair of central or intermediate upright webs connecting saidhorizontal side webs with said trans versely horizontal bottom web andtapering in depth from the middle toward each end of the bolster, saidupright webs forming a plurality of open drawable channels between themextending trom end to end of-the bolster, said bottom web having anintegral center plate seat at its middle portion, sub stantially asspecified.

a. A bolster consisting of an integral casting comprising a pair ofstraight horizontal side webs extending from end to end of the bolster,a central bottom web horizontal in cross section and extending fromendto end of the bolster and upwardly inclined from the middle towardeach end, a pair of central or intermediate upright webs connecting saidhorizontal side webs with said transversely horizontal bottom web andtapering in depth from the middle toward each end of the bolster, and apair of depending upright side webs tapering in depth from the middletoward each end of the bolster, said upright webs forming a plurality ofopen drawable channels between them extending from end to end of thebolster, said'bolster having at intervals transverse fillets connectingsaid upright and horizontal webs, substantially as specified.

5. The combination of a cast steel body.

bolster comprising a air of horizontal webs extending from en to end ofthe bol ster, a central bottom web transversely horizontal, extendingfrom end to end of the bolster and upwardly inclined from the middletoward each end, a pair of upright intermediate webs connecting saidhorizontal side webs and said bottom web and a pair of depending uprightside webs with a cast steel truck bolster comprising a pair ofhorizontal side webs extending from end to end of thebolster, a bottomweb transversely horizontal extending from end to end of the bolster andupwardly inclined from the middle toward each end, a pair of uprightintermediate webs and said bottom web and a pair of depending uprightside webs, said upright webs forming a plurality of open drawablechannels between them extending from end to end of the bolster,substantially as specified.

6. The combination of a cast steel body bolster comprising a pair ofhorizontal side webs extending from end to end of the bolster, a bottomweb transversely horizontal extending from end to end of the bolster andupwardly inclined from the middle to ward each end, a pair of uprightintermediate webs and said bottomweb and a pair of depending uprightside webs with a cast steel truck bolster comprising a pair ofhorizontal side webs extending from end to end of the bolster, a bottomweb transversely horizontal extending from end to end of the bolster andupwardly inclined from the middle toward each end, a pair of uprightintermediate webs connecting said side webs and said bottom web and apair of depending upright side webs, said bolsters having integralcenter plate seats at their middle, said upright webs forming aplurality of open drawable channels between them extending from end toend of the bolster, substantially as specified.

7. An integral metal beam comprising a pair of horizontal side websextending from end to end, a central web, horizontal in cross sectionand extending from end to end, a pair of intermediate upright websconnecting said side and central webs, said upright webs forming aplurality of open drawable channels between them extending from end toend of the bolster, substantially as specified.

8. An integral metal beam comprising a pair of horizontal side websextending from end to end, a central web, horizontal in cross sectionand extending from end to end, a pair of intermediate upright websconnecting said side and central webs, and a pair of upright side webs,said upright webs forming a plurality of open drawable channels betweenthem extending from end to end of the bolster, substantially asspecified.

9. The integral cast metal beam comprising a pair of horizontal sidewebs extending from end to end, a central web, horizontal incross-section extending from end to end and inclined from the middletoward each end, a pair of intermediate upright webs connecting saidside and central webs and taperin in depth from the middle toward eachend and a pair of upright side webs tapering in width from the middletoward each end, substantially as specified.

JOHN F. OOONNOR.

Witnesses:

H. M. MUNDAY, P. ABRAMS.

